Functionalized-AgNPs for Long-Term Stability and Its Applicability in the Detection of Manganese Ions

Table 2

Long-term stability of the colloidal AgNPs.

Methods	Precursors	Reducing agent	Stabilizer or surfactant	Stability time	Ref.
Chemical synthesis	AgNO3	Citrate	Citrate/gelatin mixture	118 days	[3]
Chemical synthesis	AgNO3	NaBH4	Aminosilanes	30 days	[9]
Chemical synthesis	AgNO3	NaBH4	β-Cyclodextrin, adamantine	14 days	[16]
Chemical synthesis	AgNO3	NaBH4	Dodecanethiol	60 days	[7]
Green synthesis	AgNO3	NaBH4	L-Cysteine	60 days	[20]
Biological synthesis	AgNO3	Bacterial biomass	Bacterial biomass	90 days	[21]
Chemical synthesis	AgNO3	NaBH4	PHMB	180 days	This study